The new Google Calendar is cleaner, has more white space and is easier to read.

After switching you can customize the appearance by clicking the settings cog in the upper right portion of the screen. To revert to the old design altogether you may select the Back to Classic Calendar.Partially reposted from: https://www.cnet.com/how-to/how-to-get-the-new-google-calendar-on-the-web-right-now/